The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Spectrum Range, south of Mount Edziza, in NW British Columbia, is one of four large composite volcanoes that make up the Mount Edziza-Spectrum Range volcanic complex.
Similar to the other 3 central volcanoes, Spectrum Range stratovolcano is formed predominately by rhyolitic lava domes and overlies a basal basaltic shield volcano. The volcano contains both subglacial and subaerial lava domes, pyroclastic cones and lava flows.
The Mess Lake Lava Field on the NW flank consists of young lava flows and tephra from 3 cinder cones, including The Ash Pit, probably the youngest volcanic feature of Spectrum Range.
The Spectrum Range has its name for its extensive colorful solfataric alteration.
Ibu volcano photos: Ibu in Halmahera is one of the most active, but rarely visited volcanoes in Indonesia. A spectacular lava dome is growing inside the volcano's breached crater, with frequent explosions.
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